Apparatus for coating sheet-metal plates



(No Model.) 2 Sheets-Sheet 1. S. Y. BUCKMAN.

APPARATUS EUR COATING SHEET METAL PLATES. u

1\I0.451,262.` l Patented Apr. 28, 1891.

A u N v Q S S w N n s w e A E P i g 1 q 4 4r j f o I w N if A fb E Y 7, 4 4 fix z 5 v'\ if f w/mfssfs: Y VE/v 0H.

je@ s 0 "u (No Model.) 2 Sheets-Sheet 2.

s.' Y. BUGKMAN. APPARATUS FOR GOATING SHEET METAL PLATES.

No. 451,262. atentedApr. 28, 1891.

TTUH/VEY.

I UNITED STATES PATENT APPARATUS FOR COATIN'G SHEET-METAL PLATES.

SPECIFICATION forming part of Letters PatentNo. 451,262, dated April 28, 1891. Application filed August 30, 1890. lSerial No. 363,498. `(No model.)

.T0 @ZZ whom, it may concern:

Be it known that I, SAMUEL Y. BUCKMAN, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Apparat-us for Coating Sheet-Metal Plates, which improvement is fully set forth in the following specification and accompanying drawings.

My invention relates to improvements in apparatus for coating sheet-metal plates; and it consists of a dipping-pot constructed substantially as hereinafter described and claimed.

It further consists of adjustable feeding mechanism, substantially as described and claimed, and, finally, it consists of the cornbination of parts hereinafter described and claimed.

Figure l represents a partial longitudinal sectional view of an apparatus embodying my invention. Fig. 2 represent-s a plan View thereof. Fig. 3 represents a view of a detail part thereof on an enlarged scale. Fig. 4: represents a transverse sectional view of the guides, showing the side pieces thereof.

Similar letters of reference indicate corresponding parts in the several figures.V

Referring to the drawings, A designates a dipping-pot having top and bottom walls of U shape, thereby forming two opposite limbs B and C, through which a' sheet B ,composed of the connected plates of sheet metal to be coated with tin or an alloy thereof, is passed.

D designates a supply-pot having a duct E,

leading from its lower portion to the upper portion of the dipping-pot, and F designates a melting-pot, in which the coating material is first placed, and which is located on the side of and above the supply-pot D, so that a duct G at its base leads into the upper portion of the said pot D.

Above and seated on the supply-pot D, so as to be highly heated thereby, is the flux-box H, which at one end is adapted to receive a sheet formed of plates to be coated, and at the other end communicates with lthe entrance-limb C of the dipping-pot A, so that at its exit from the flux-box the said sheet enters the dipping-pot. The said dippingpot has a separate furnace J from the melting and supply pot furnace K, but has also its limb C so exposed to the said furnace K as to receive heat therefrom, in addition to the heat received from its own furnace J, whereby the contents of the said limb become morehighly heated or are raised 'to agreater temperature than the contents of the opposite limb IS thereof.

The dipping-pot A and the flux-box H are provided with a series offeed-rollers L, each pair of which extends transversely thereof, and is adapted to be in contact with the sheet of metal plates, so as to advance the same through the said pot and box. The upper one of each pair of said rollers L in the pot A is journaled in the lower ends of bars or rods M, which are adapted to be adjusted in the tubes N, the latter being secured to the brackets P, fastened to extensions of the sides of the walls of said pot. The said rods M are adjusted in the tubes N by drawing them either in orout Mounted on the journals of the upper rollers L are gear-wheels Q, which mesh with gear-wheels R on the journals of the lower rollers, the said gear-wheels R meshing with a train of gearing S, and the journals of the said train S and wheels R having bearings on the inner side walls of the dipping-pot and flux-box.

At the entrance of the flux-box are feedrollers T, which receive motion by means of any suitable connecting gearing or mechan ism.

U designates guides, which are formed of a perforated base portion U with side pieces U2, and are secured to the inner side of the walls of the iuX-box H and dipping-pot A between the feed-rollers Ltherein, so as toinsure the proper passage of the plates through said parts.

V designates a supporting-leg of the dipping-pot, which rests on the separating-wall X of the furnaces J and K, and which is provided with an opening Y therein forthe passage of the products of combustion from the furnace J into the fire-chamber of the furnace K, so as to aid in superheating the limb C of the dipping-pot, as well as to utilize the heat from the said furnace ,in melting the coating material in the pot D.

In the side wall Z of the furnace J is a IOC damper A, by means of which thc heat of the furnace K can be directed to a chamber A2, and so uniformly heat all portions of the dipping-pot.

In contact with the limb B of the dippingpot and extending across the same are chambers or passages B2, through which currents of cold water may be passed for cooling the contents of the said'limb B.

The manner of the operation is as follows: A sheetof metal is drawn by the feed-rollers into the iuX-box II, which latter is of such length and has the feed-rollers and guides therein located in such manner as to expose to the flux at one time substantially as much surface of the sheet as will be exposed to the coating material when the sheet is in the dipping-pot. Only pure coating material enters the dipping-pot from the supply-pot D, as the flow into the same is from the bottom of the supply-pot, thus leaving any dross or impurities therein atV the surface or above the duct'E in the said supply-pot. As'the sheet enters the limb C, it comes iu contact wit-h thesuperheated melted coating metal therein, and passing through the pot and entering the limb B it comes in contact with the melted metal of a less degree of temperature than that in the limb C. By having the melted coating in the pot at two different temperatures the one passage therethrough serves in place of two separate dippings in different pots, so that by this process what is termed as a rolled or hand-dipped7 plate can be produced. On the exit of the sheet from the limb B of the dipping-pot it enters a fluxbox` C', formed ,in the upper lpart and continuous of the said limb, leaving which it passes between the squeezing rollers D', which are geared to the train of gearing S, and regulate or control the thickness of the coating on the said plate.

Having thus described my invention, what I claim as new, an d desire to secure by Letters Patent, is-

l. In an apparatus for coating sheet-metal plates, a dipping-pot and a supply-pot, the latter with a duct near its base leading into the upper part of one limb of the dipping-pot, and separate furnaces for said pots, the side of the said limb of the dipping-pot forming a portion of the wall of the combustion-chamber of the supply-pot, whereby one side of the vdipping-pot is adapted to receive more heat than the other side, said parts being combined substantially as described.

2. In an apparatus for coating sheet-metal plates, a melting-pot, a supply-pot, and a dipping-pot with entrance and exit limbs, said melting-pot leading from near its base into the supply-pot and said supply-pot leading from near its base into the upper part of the dipping-pot, a furnace forthe dipping-pot, and a single furnace for said melting and supply pots, said parts being combined substantially as described.

3. In an apparatus for coating sheet metals,

a melting-pot, a supply-pot, a duct leading from said melting to said supply pot, a single furnace for said melting and supply pots, a dipping-pot with -entrance and exit limbs, a duct leading from near the base of the supply-pot to the upper part of the dipping-pot, a flux-box on the supply-pot and communicating with the dipping-pot, and a separat-e furnace for the dipping-pot, said dipping-pot having one of its walls forming part of the wall of the fire-chamber ot' the supply-pot furnace, said parts being combined substantially as described.

Ll. In an apparatus for coating sheet metals, a melting-pot and a communicating supplypot, a furnace for said pots, a dipping-pot with a duct leading into the upper part thereof from the lower part of the supply-pot, a separate furnace for the dipping-pot, and a supportingleg for the dipping-pot provided with an opening affording communication between the rechamber of the two furnaces, said parts being combined substantially as described.

5. In an apparatus for coating sheet metals, communicating melting and supply pots having a single furnace, and a communicating dipping-pot with a furnace and provided with a supporting-leg having an opening affording communication between thc tire-chambers of the two furnaces, said part-s being combined substantially as described.

t3. In an apparatus for coating sheet metals, a supplypot with a furnace, a dipping-pot communicating with said supply-pot and having a furnace, a supporting-leg for said dipping-pot having an opening affording communication between the fire-chambers of said furnaces, a flux-box on said supply-pot and communicating with said dipping-pot, and rollers and guides in said flux-box and dippingpot, said parts being combined substantially as described.

'7. In an apparatus for coating sheet metals, a twin dipping-pot of U shape, having a furnace and a separate air-chainberbeneath the same, a damper in a side or inner supportingwall of the pot controlling the admission of the products of combustion to said air-chamber, and means, substantially as described, for cooling the limb of the dipping-pot below which the said air-chamber is situated, said parts being combined substantially as described.

8. In an apparatus for coating sheet-metal plates, a dipping-pot having feed-rollers therein, one of each pair of said rollers having stationary journal-bearings, rods in which the other roller of each pair has bearings, tubes connected with the Walls of the pot and in which the rods are adjustable, and means, substantially as described, for moving said rods endwise in said tubes, said parts being combined substantially as described.

SAMUEL Y. BUCKMAN.

Witnesses:

JOHN A. WIEDERSHEIM, A. P. JENNINGS.

IOO

IOS

IIO 

